Coaxial cable connector

• US 7,182,639 B2
• Filed: 09/23/2005
• Issued: 02/27/2007
• Est. Priority Date: 12/14/2004
• Status: Active Grant

• Current Assignee: PPC Broadband Incorporated (Belden Inc.)
• Original Assignee: Corning Gilbert Incorporated (Corning Incorporated)
• Inventors: Burris, Donald A.
• Primary Examiner(s): NGUYEN, TRUC T
• Application Number:
  US11/233,887
• Publication Number:
  US 20060128217A1
• Time in Patent Office: 522 Days
• Field of Search: 439578-584, 439/675, 439/63, 439/310, 439/320, 439/275
• US Class Current: 439/584
• CPC Class Codes: H01R 13/622 Screw-ring or screw-casing H01R13/623 takes precedence
• CPC Class Codes: H01R 9/0518 Connection to outer conductor by crimping or by crimping ferrule
• CPC Class Codes: H01R 9/0521 Connection to outer conductor by action of a nut
• CPC Class Codes: H01R 9/0524 Connection to outer conductor by action of a clamping member, e.g. screw fastening means H01R9/0515 takes precedence
• CPC Class Codes: H01R 9/0527 Connection to outer conductor by action of a resilient member, e.g. spring

Abstract

A connector for coaxial cable is disclosed herein which has a gripping ring positioned between a compression ring and a connector body. At least two opposed ends of the gripping ring are capable of being displaced radially inwardly for gripping the cable.

Claims

1. A connector for coupling an end of a coaxial cable to a terminal, the coaxial cable comprising an inner conductor, a dielectric surrounding the inner conductor, an outer conductor surrounding the dielectric, a braided shield surrounding the dielectric, and a jacket surrounding the braided shield, the connector comprising:

a hollow body comprising a rear end, a front end, and an internal surface extending between the rear and front ends of the body, the internal surface defining a longitudinal hole;

a compression ring comprising a rear end, a front end surrounding at least a portion of the hollow body, and an inner surface defining a longitudinal hole extending between the rear and front ends of the compression ring, the compression ring being axially movable over an outside portion the hollow body between a rearward position and a forward position;

a tubular post disposed at least partially within the longitudinal hole of the hollow body, the tubular post having a rear end, an inner surface and an outer surface, and wherein the outer surface of the tubular post and the internal surface of the tubular post define an annular cavity therebetween; and

a deformable gripping ring disposed within the longitudinal hole of the compression ring between the front and rear ends thereof, the deformable gripping ring comprising a front end, a rear end, an outer surface, an inner surface defining an opening therein, a first portion adjacent the front end, and a second portion adjacent the rear end;

wherein in the rearward position the opening in the first portion of the deformable gripping ring has a first inner diameter and the opening in the second portion of the deformable gripping ring has a second diameter; and

wherein, in the forward position, the deformable gripping ring is compressed between the hollow body and the compression ring causing the first and the second inner diameters to be smaller in the forward position than in the rearward position.

2. The connector of claim 1, further comprising a coupler disposed proximate the front end of the body.

3. The connector of claim 1, wherein in the rearward position the first inner diameter is larger than the second inner diameter.

4. The connector of claim 1, wherein in the rearward position the front end of the deformable gripping ring is in physical contact with a portion of the hollow body.

5. The connector of claim 1, wherein in the rearward position the front end of the deformable gripping ring is forward of the rear end of the hollow body.

6. The connector of claim 1, wherein the front end of the deformable gripping ring maintains the deformable gripping ring concentric with a longitudinal axis through the connector.

7. The connector of claim 1, wherein the deformable gripping ring is concentrically mounted to the inner surface of the compression ring.

8. The connector of claim 7, wherein the deformable gripping ring is mounted onto the inner surface of the compression ring by press fit.

9. The connector of claim 7, wherein the deformable gripping ring is mounted onto the inner surface of the compression ring by adhesive.

10. The connector of claim 1, wherein the deformable gripping ring is not attached to the compression ring.

11. The connector of claim 1, wherein, in the forward position, substantially all of the first portion of the deformable gripping ring is disposed within the annular cavity.

12. The connector of claim 1, wherein the deformable gripping ring is circumferentially continuous.

13. The connector of claim 1, wherein the deformable gripping ring forms a continuous 360°

seal in the forward position.

14. The connector of claim 1, wherein, in the forward position, the inner surface of the deformable gripping ring, from the rear end to the front end thereof, contacts the jacket of the cable.

15. The connector of claim 1, wherein, in the forward position, substantially all of the inner surface of the deformable gripping ring contacts the jacket of the cable.

16. The connector of claim 1, wherein at least a portion of the first portion of the deformable gripping ring surrounds at least a portion of the tubular post in the forward position.

17. The connector of claim 1, wherein the hollow body has a rear end, wherein the rear end of the hollow body includes a rearward facing tapered portion configured to displace the front end of the deformable gripping ring radially inwardly.

18. The connector of claim 16, wherein the front end of the deformable gripping ring contacts the rearward facing tapered portion in the rearward position.

19. The connector of claim 1, wherein the inner surface of the compression ring comprises a forward facing tapered portion configured to displace the rear end of the deformable gripping ring radially inwardly.

20. The connector of claim 1, wherein the outer surface of the tubular post includes a raised ridge.

21. The connector of claim 1, wherein the outer surface of the tubular post includes at least one thread thereon.

22. The connector of claim 20, wherein at least a portion of the deformable gripping ring surrounds the raised ridge in the forward position.

23. A combination of a coaxial cable and a connector for coupling an end of the coaxial cable to a terminal, the coaxial cable comprising an inner conductor, a dielectric surrounding the inner conductor, an outer conductor surrounding the dielectric, a braided shield surrounding the dielectric, and a jacket surrounding the braided shield, the connector comprising:

a hollow body comprising a rear end, a front end, and an internal surface extending between the rear and front ends of the body, the internal surface defining a longitudinal hole;

a compression ring comprising a rear end, a front end surrounding at least a portion of the hollow body, and an inner surface defining a longitudinal hole extending between the rear and front ends of the compression ring, the compression ring is axially movable over an outer portion of the hollow body between a rearward position and a forward position;

a tubular post disposed at least partially within the longitudinal hole of the hollow body, the tubular post having a rear end, an inner surface and an outer surface, and wherein the outer surface of the tubular post and the internal surface of the hollow body define an annular cavity therebetween, wherein the inner surface is configured to allow the dielectric and the inner conductor to enter the tubular post and to allow the braided shield and the jacket to enter the annular cavity; and

a deformable gripping ring disposed within the longitudinal hole of the compression ring between the front and rear ends thereof, the deformable gripping ring comprising a front end, a rear end, an outer surface, an inner surface defining an opening therein, a first portion adjacent the front end, and a second portion adjacent the rear end;

wherein the cable extends through the compression ring, through the deformable gripping ring, and into the hollow body, wherein the rear end of the tubular post is disposed between the braided shield and the dielectric, and part of the jacket and part of the braided shield are disposed in the annular cavity;

wherein in the rearward position the opening in the first portion of the deformable gripping ring has a first inner diameter and the opening in the second portion of the deformable gripping ring has a second diameter; and

wherein, in the forward position, the deformable gripping ring is deformed and compressed between the compression ring and the jacket, the rear end of the deformable gripping ring is displaced radially inwardly sufficient to reduce the second inner diameter and to place the rear end of the deformable gripping ring into contact with the jacket, and the front end of the deformable gripping ring is displaced radially inwardly sufficient to reduce the first inner diameter and to place the front end of the deformable gripping ring into contact with the jacket, wherein the jacket is sandwiched between the deformable gripping ring and the tubular post.

24. The connector of claim 23, wherein the deformable gripping ring is deformed sufficiently to deform the jacket in the forward position.

25. The connector of claim 23, wherein the deformable gripping ring forms a seal between the hollow body and the jacket in the forward position.

26. The connector of claim 23, wherein the deformable gripping ring forms a seal between the compression ring and the jacket in the forward position.

27. The connector of claim 23, wherein, in the forward position, the deformable gripping ring forms a seal simultaneously between the hollow body and the jacket, between the compression ring and the jacket, and between the hollow body and the compression ring.

28. The connector of claim 23, wherein the deformable gripping ring forms a seal to seal the annular cavity in the forward position.

29. The connector of claim 23, wherein the inner surface of the deformable gripping ring does not contact the jacket in the rearward position.

30. The connector of claim 23, wherein, in the forward position, substantially all of the inner surface of the deformable gripping ring contacts the jacket of the cable.

31. A connector for coupling an end of a coaxial cable to a terminal, the coaxial cable comprising an inner conductor, a dielectric surrounding the inner conductor, an outer conductor surrounding the dielectric, a braided shield surrounding the dielectric, and a jacket surrounding the braided shield, the connector comprising:

a hollow body comprising a rear end, a front end, and an internal surface extending between the rear and front ends of the body, the internal surface defining a longitudinal hole;

a compression ring comprising a rear end, a front end surrounding at least a portion of the hollow body, and an inner surface defining a longitudinal hole extending between the rear and front ends of the compression ring, the compression ring being axially movable over an outside portion the hollow body between a rearward position and a forward position;

a tubular post disposed at least partially within the longitudinal hole of the hollow body, the tubular post having a rear end, an inner surface and an outer surface, and wherein the outer surface of the tubular post and the internal surface of the tubular post define an annular cavity therebetween; and

a deformable gripping ring disposed within the longitudinal hole of the compression ring between the front and rear ends thereof, the deformable gripping ring comprising a front end, a rear end, an outer surface, an inner surface defining an opening therein, a first portion adjacent the front end, and a second portion adjacent the rear end;

wherein in the rearward position the opening in the first portion of the deformable gripping ring has a first inner diameter and the opening in the second portion of the deformable gripping ring has a second diameter, and the front end of the deformable gripping ring is forward of the rear end of the hollow body; and

wherein, in the forward position, the deformable gripping ring is compressed between the hollow body and the compression ring causing the first and the second inner diameters to be smaller in the forward position than in the rearward position.